HTC Desire 820s dual sim vs T-Mobile Sidekick

Compare recorded specifications, size and practical differences.

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Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

  • Weight

    Sidekick: 27 g lighter

    Desire 820s dual sim:
    155 g
    Sidekick:
    128 g
  • Width

    Sidekick: 20.7 mm narrower

    Desire 820s dual sim:
    78.7 mm
    Sidekick:
    58 mm
  • Screen diagonal

    Sidekick: 2.9 in smaller diagonal

    Desire 820s dual sim:
    5.5 in
    Sidekick:
    2.6 in
  • Depth

    Desire 820s dual sim: 10.3 mm thinner

    Desire 820s dual sim:
    7.7 mm
    Sidekick:
    18 mm
  • Height

    Sidekick: 38.7 mm shorter

    Desire 820s dual sim:
    157.7 mm
    Sidekick:
    119 mm
  • Release year

    Desire 820s dual sim:
    2015
    Sidekick:
    2008

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

  1. 1. Desire 820s dual sim

    Height:
    157.7 mm +38.7 mm versus Sidekick
    Width:
    78.7 mm +20.7 mm versus Sidekick
    Depth:
    7.7 mm
  2. 2. Sidekick

    Height:
    119 mm
    Width:
    58 mm
    Depth:
    18 mm +10.3 mm versus Desire 820s dual sim

Weight

Bars start at zero and share a scale within this chart.

  1. 1. Desire 820s dual sim

    155 g

    +27 g versus Sidekick

  2. 2. Sidekick

    128 g

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

  1. 1. Desire 820s dual sim

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²
  2. 2. Sidekick

    Screen diagonal:
    2.6 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    19.2 cm²

Desire 820s dual sim has approximately 333.4% more rectangular screen area than Sidekick.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Desire 820s dual sim, Sidekick, compared at the same storage capacity.
StorageDesire 820s dual simSidekick
16 GB 2 GB RAM Unknown
Sidekick: Original memory entry

128 MB RAM · 64 MB ROM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Desire 820s dual sim

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. Sidekick

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. Desire 820s dual sim

    2600 mAh

    +1570 mAh versus Sidekick

  2. 2. Sidekick

    1030 mAh

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Desire 820s dual sim2. Sidekick

Everyday essentials
Everyday essentials — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Dimensions (HxWxD)
  • 157.7 Х 78.7 Х 7.7 mm
  • 119 Х 58 Х 18 mm
Weight
  • 155 g
  • 128 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.5" inch
  • 2.6" inch
Screen resolution
  • 720 x 1280 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 128 MB RAM
  • 64 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Non-removable Li-Po
  • 1030 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.4 (KitKat); Sense UI 6
  • Danger 4.7
Chipset
  • Mediatek MT6752 (28 nm)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 16M
  • 65K
Screen area
  • 83.4 cm2
  • 19.2 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 67.2%
  • 27.9%
PPI /points per inch/
  • 267 PPI
  • 179 PPI
Camera and Video
Camera and Video — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Rear camera, main
  • 13 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • 1.3 MP
Functions
  • LED flash
  • HDR
  • panorama
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0 MP,
Specifications
  • 8 MP
Unknown
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Processor CPU
  • Octa-core 1.7 GHz Cortex-A53
Unknown
Graphics processor GPU
  • Mali-T760MP2
Unknown
Antutu 7 score *
  • 41825
Unknown
GeekBench 4 Single Core *
  • 790
Unknown
GeekBench 4 Multi-Core *
  • 3723
Unknown
General specs
General specs — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Release date
  • 2015
  • March
  • 2008
  • July
Colors
  • Marble white
  • Milkyway Gray
  • Monarch Orange
  • Santorini White
  • Tuxedo Gray
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 370 EUR
Unknown
Battery life
  • Stand by time- Up to 560 h (3G) Talking time- Up to 12 h 10 min (3G)
  • Stand by time- Up to 216 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 TD-SCDMA -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Unknown
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • No
USB
  • microUSB 2.0
  • miniUSB
Bluetooth
  • 4.0
  • A2DP
  • 2.0
  • A2DP
Music and Audio
Music and Audio — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Radio
  • FM radio
  • No
Others Unknown
  • Swivel display
Other features
Other features — specifications for Desire 820s dual sim, Sidekick.
SpecificationDesire 820s dual simSidekick
Dop
  • Sensors Accelerometer
  • proximity
  • compass
  • MP3/WAV/WMA audio player -MP4 player -Voice memo -Predictive text input